/*
 * Copyright (c) 2005, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package bssp;

import org.openjdk.jmh.annotations.*;

import java.util.concurrent.TimeUnit;

@Fork(1)
@BenchmarkMode(Mode.AverageTime) // 求平均时间
@Warmup(iterations = 3) // 预热，防止首次执行造成不准确
@Measurement(iterations = 3) // 运行三次
@OutputTimeUnit(TimeUnit.NANOSECONDS) // 输出的单位是纳秒
public class MyBenchmark {

    static int i = 0;

    @Benchmark // 要进行测试的方法
    public void test1() throws Exception {
        i++;
    }

    @Benchmark // 要进行测试的方法
    public void test2() throws Exception {
        Object lock = new Object();
        synchronized (lock) {
            i++;
        }
    }

}
